Last updated: June 24, 2025
In August, the average temperature in Lake Forest, United States hovers around 28°C (83°F), with a comfortable minimum of 24°C (76°F) and a maximum that can reach up to 32°C (90°F). Expect 192 mm (7.6 in) of precipitation spread over 27 days, contributing to a humid atmosphere with an average humidity level of 72%.
In August in Lake Forest, the average temperature is 28°C (83°F), with maximums reaching 32°C (90°F) and minimums dipping as low as 24°C (76°F). It's an ideal time for travelers seeking warm weather and pleasant conditions.
In Lake Forest in August, the precipitation amount is 192 mm (7.6 in) during 27 days, indicating a frequent occurrence of rain throughout the month.
In Lake Forest in August, humidity is 72%. With an average temperature of 28°C (83°F), this humidity feels like you're walking through a warm, damp blanket, making travel particularly stifling and sticky, where even short excursions can leave you feeling overheated and in need of frequent breaks for hydration.
In Lake Forest in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Lake Forest.
UV Risk Categories
Weather in Lake Forest varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Lake Forest, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 21°C (69°F) | 35 mm (1.4 inches) | 81% | high |
| February Weather | 23°C (73°F) | 53 mm (2.1 inches) | 79% | very high |
| March Weather | 23°C (73°F) | 30 mm (1.2 inches) | 76% | very high |
| April Weather | 25°C (77°F) | 75 mm (2.9 inches) | 73% | extreme |
| May Weather | 26°C (79°F) | 170 mm (6.7 inches) | 71% | extreme |
| June Weather | 27°C (82°F) | 191 mm (7.5 inches) | 69% | extreme |
| July Weather | 28°C (83°F) | 188 mm (7.4 inches) | 70% | extreme |
| August Weather | 28°C (83°F) | 192 mm (7.6 inches) | 72% | extreme |
| September Weather | 28°C (82°F) | 215 mm (8.5 inches) | 76% | extreme |
| October Weather | 27°C (80°F) | 167 mm (6.6 inches) | 79% | very high |
| November Weather | 24°C (75°F) | 94 mm (3.7 inches) | 80% | very high |
| December Weather | 22°C (72°F) | 45 mm (1.8 inches) | 81% | high |